§ 52.152 RESIDENTIAL EQUIVALENT UNIT (REU).

   (A)   A residential equivalent unit (REU) shall be calculated for every new customer (residential, commercial, non-industrial, industrial) in the city or existing customer who is expanding a facility in the city to form the basis for comparing different water and wastewater customers to calculate the capacity fee as established by this chapter.

   (B)   One REU represents the volume of wastewater expected to be discharged by a single-family residence in the city. The wastewater REU in the city is equal to 300 gallons per day when calculating equivalency on flow basis. An REU may also be calculated on a situation specific basis on mass quantity when flow is not representative for calculation.

   (C)   The number of REUs for an entity other than a single-family residence shall be calculated by dividing the actual total daily flow (if known) or the projected total daily flow (from the information provided by the owner or determined by the city from the following Table: Typical Expected Wastewater Capacity from the entity) divided by 300 gallons.

TYPICAL WATER USE/EXPECTED WASTEWATER CAPACITY
User	Unit	Flow (g/unit/day) Range	Flow (g/unit/day) Typical
Airport	Passenger	3-5	4
Apartment building	Person	100-200	100
Auto service station	Employee Vehicle served	8-15 8-15	13 10
Boarding house	Person	25-50	40
Department store	Toilet room Employee	400-600 8-13	550 10
Hotel	Guest Employee	40-60 8-13	50 10
Lodge/tourist home	Guest	30-50	40
Motel	Guest	25-40	35
Motel w/kitchen	Guest	25-60	40
Self serve laundry	Machine Wash	400-650 45-55	550 50
Office	Employee	8-20	15
Public Lavatory	User	3-6	5
Restaurant (w/lavatory)	Customer	8-10	9
Conventional Short-Order	Customer	3-8	6
Bar/cocktail lounge	Customer Seat	2-4 15-25	3 20
Shopping center	Parking space Employee	1-3 8-13	2 10
Theater	Seat	2-4	3
Indoor	Car	3-5	4
Outdoor
Assembly hall	Seat	2-4	3
Hospital (medical)	Bed Employee	130-260 5-15	150 10
Hospital (mental)	Bed Employee	80-150 5-15	120 10
Prison	Inmate Employee	80-150 5-15	120 10
Rest Home	Resident Employee	5-120 5-15	90 10
School(day)	Student	15-30	25
Cafeteria, gym	Student	10-20	15
Showers cafeteria only no cafeteria or gym	Student	5-15	10
Resort apartment	Person	50-70	60
Resort cabin	Person	8-50	40
Bowling alley	Alley	150-250	200
Camp	Person	15-30	25
Pioneer type	Person	35-50	45
Children’s w/toilet, bath	Person	10-20	15
Day, w/meals	Person	8-18	13
Day, w/out meals	Person	75-100	90
Luxury, private baths	Trailer	75-150	125
Trailer
Campground (developed)	Person	20-40	30
Country club	Member (Present) Employee	60-125 10-15	100 12
Dormitory	Person	20-45	35
Fairground	Visitor	1-2	2
Picnic park (flush toilets)	Visitor	5-10	8
Swimming Pool	Customer Employee	5-15 8-15	10 10
Visitor Center	Visitor	4-8	6
1. Industrial Building (Sanitary Only)	Employee	7-16	13

 

Source: Wastewater Engineering-Treatment, Disposal and Reuse. Third Edition, Metcalf and Eddy, Inc. 1991

      (1)   Example #1. New Commercial Customer “X” - Projected daily wastewater flow of 2,400 gallons per day. (2,400/300 = 8 REUs for wastewater use.)

      (2)   Example #2. New Industrial Customer “Y” - Projected daily wastewater flow only of 240,000 gallons per day. (240,000/300 = 800 REUs for wastewater.)

      (3)   Example #3. Existing Customer “Z” - Expanding and projected daily water use and wastewater flow to increase by 3,000 gallons per day. (3,000/300 = 10 REUs increase for wastewater.)

      (4)   Example #4. New Customer “A” - School with cafeteria, gym and showers and 600 students (Table: Typical Expected Wastewater Capacity - 25 gallons per student per day = 15,000 gallons per day water use/wastewater discharge) (15,000/300 = 50 REUs).

   (C)   No user shall discharge any wastewater in excess of its permitted or purchased capacity. Such excess discharge shall be cause for a permit modification and / or an enforcement action.

(Ord. 1639, passed 12-19-16)